PN-2000-EX Fixed Flammable Gas Detector

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PN-2000-EX Fixed Flammable Gas Detector

Product ID：HQWRkq032

Price: Please inquire PDF Format

Supply Ability:50 SETS/MON

Port:SHENZHEN

Product Introduction
Other information

Model NumberPN-2000-EX

Brand NameCDPENGLEI

Payment TermsTT，PAYPAL，Alibaba.com Pay

PN-2000-EX Fixed Flammable Gas Detector
Product Introduction
The PN-2000-EX Fixed Flammable Gas Detector is an industrial-grade combustible gas detection and alarm system designed for continuous monitoring of flammable gases in hazardous environments.
Equipped with a high-performance imported catalytic combustion sensor, the PN-2000-EX provides accurate and reliable detection with excellent anti-interference capability and a service life of more than 3 years. The explosion-proof gas detector is suitable for harsh industrial conditions including oil and gas facilities, petrochemical plants, metallurgy, chemical production, and other areas requiring continuous gas safety monitoring.
The system supports multiple communication and alarm outputs, including 4-20mA analog output, RS485 Modbus communication, relay alarm output, and wireless data transmission, enabling integration with centralized monitoring platforms.

Performance Features
•  High-performance catalytic combustion sensor
⊙  Uses imported industrial-grade combustible gas sensors with strong anti-interference capability and long service life.
•  Explosion-proof industrial design
⊙  Aluminum alloy explosion-proof housing with corrosion resistance and protection against harsh environments.
•  Wide detection range
⊙  Detects combustible gas concentrations from 0-100% LEL with high accuracy.
•  Multiple signal outputs
⊙  Supports 4-20mA, RS485 Modbus, relay output, and optional wireless communication.
•  Large LCD display
⊙  Real-time display of gas concentration, gas type, unit, and operating status.
•  Intelligent temperature compensation
⊙ Automatic digital temperature tracking compensation improves measurement stability.
•  Independent sensor chamber
⊙  Sensor replacement does not require field calibration; key parameters are automatically recognized.
•  Two-level alarm function
⊙  Provides dual relay outputs with active DC24V and passive signal output.
•  Safe infrared remote operation
⊙  Optional infrared remote controller allows parameter adjustment without opening the enclosure in hazardous areas.
•  Smart monitoring software support
⊙  Enables real-time data visualization, historical records, curve generation, and data export.

Working Principle
The PN-2000-EX fixed combustible gas detector operates based on the catalytic combustion detection principle.
When combustible gases enter the sensor chamber, they contact the catalytic element and undergo oxidation combustion on the sensor surface. The heat generated changes the resistance value of the detection element. The electronic circuit converts this resistance variation into a proportional electrical signal corresponding to gas concentration.
The detector processes the signal through intelligent compensation algorithms and displays the gas concentration as a percentage of the Lower Explosive Limit (LEL). When the gas concentration exceeds preset alarm thresholds, the system activates sound/light alarms and sends output signals to external control systems.

Technical Parameters

Parameter	Specification
Model	PN-2000-EX
Product Type	Fixed Flammable Gas Detector
Detection Gas	Combustible Gas (EX)
Detection Principle	Catalytic Combustion
Detection Range	0-100% LEL
Resolution	0.01% LEL
Accuracy	≤±3% F.S
Repeatability	≤±1%
Zero Drift	≤±1% F.S/year
Response Time	≤20s (T90)
Recovery Time	≤30s
Sensor Type	Imported long-life catalytic combustion sensor
Sensor Lifetime	More than 3 years
Installation Type	Wall-mounted, pipeline, flow-through, pump suction optional
Thread Size	M40×1.5mm
Signal Output	4-20mA / RS485 Modbus / Relay / Wireless optional
Transmission Distance	Up to 2000m (1mm² shielded cable)
Communication Protocol	Standard Modbus RTU
Relay Output	Dual relay output (active DC24V + passive signal)
Connection Method	3/4"NPT internal thread
Housing Material	Die-cast aluminum, explosion-proof and corrosion resistant
Explosion-Proof Grade	ExdII CT6
Protection Grade	IP65
Power Supply	24VDC
Working Temperature	-40℃ to +70℃
Working Humidity	≤95%RH non-condensing
Working Pressure	≤200KPa
Dimensions	183×143×107mm
Weight	1.5kg

Application Scenarios
Oil and Gas Industry
Used for combustible gas leakage monitoring in oil fields, gas stations, pipelines, and storage facilities.
Petrochemical Plants
Provides continuous safety monitoring in chemical production areas with explosion risks.
Metallurgy Industry
Suitable for industrial furnaces, processing areas, and environments requiring combustible gas detection.
Environmental Safety Monitoring
Used for hazardous gas monitoring and industrial safety management.
Fire Protection Systems
Integrated into gas safety systems for early warning and emergency response.
Public Facilities
Applied in schools, hospitals, factories, and municipal gas monitoring projects.

PN-2000-EX vs Traditional Gas Detection Methods

Comparison Item	PN-2000-EX Fixed Gas Detector	Traditional Gas Detection Equipment
Detection Technology	Catalytic combustion sensor	Basic gas sensing technology
Installation	Fixed continuous monitoring	Often portable or manual inspection
Detection Range	0-100% LEL	Limited or variable
Communication	4-20mA + RS485 Modbus + wireless	Usually limited output
Explosion Protection	ExdII CT6 certified design	May not support hazardous areas
Temperature Compensation	Automatic digital compensation	Limited compensation
Data Management	Software monitoring and history export	Manual recording
Remote Operation	Infrared remote adjustment available	Usually requires manual operation

Frequently Asked Questions (FAQ)
1. What gases can the PN-2000-EX detect?
The PN-2000-EX is designed for combustible gas detection, including various flammable gases that can be measured by catalytic combustion sensors.
2. What is the detection range of this fixed gas detector?
The measurement range is 0-100% LEL (Lower Explosive Limit).
3. Is the PN-2000-EX suitable for explosive environments?
Yes. It features an ExdII CT6 explosion-proof housing and is designed for hazardous industrial environments.
4. What communication outputs does the detector support?
It supports 4-20mA current output, RS485 Modbus digital communication, relay output, and optional wireless transmission.
5. How long is the sensor service life?
The imported catalytic combustion sensor has a service life of more than 3 years under normal operating conditions.
6. Can the sensor be replaced without recalibration?
Yes. The independent sensor chamber allows sensor replacement without field calibration, and key parameters are automatically recognized.
7. Can the PN-2000-EX connect to a monitoring system?
Yes. It can connect to computers or industrial monitoring platforms through RS485 Modbus, 4-20mA signals, or wireless communication.
8. How is the detector operated in hazardous areas?
The optional infrared remote controller allows parameter adjustment without opening the explosion-proof enclosure, improving operational safety.

Conclusion
The PN-2000-EX Fixed Flammable Gas Detector is a reliable explosion-proof combustible gas monitoring solution combining catalytic combustion sensing technology, intelligent communication, and industrial safety design. With accurate LEL measurement, multiple output options, and robust environmental protection, it is ideal for continuous gas leakage detection in oil, chemical, metallurgy, manufacturing, and public safety applications.

Frequently Asked Questions (FAQ)
1. What gases can the PN-2000-EX detect?
The PN-2000-EX is designed for combustible gas detection, including various flammable gases that can be measured by catalytic combustion sensors.
2. What is the detection range of this fixed gas detector?
The measurement range is 0-100% LEL (Lower Explosive Limit).
3. Is the PN-2000-EX suitable for explosive environments?
Yes. It features an ExdII CT6 explosion-proof housing and is designed for hazardous industrial environments.
4. What communication outputs does the detector support?
It supports 4-20mA current output, RS485 Modbus digital communication, relay output, and optional wireless transmission.
5. How long is the sensor service life?
The imported catalytic combustion sensor has a service life of more than 3 years under normal operating conditions.
6. Can the sensor be replaced without recalibration?
Yes. The independent sensor chamber allows sensor replacement without field calibration, and key parameters are automatically recognized.
7. Can the PN-2000-EX connect to a monitoring system?
Yes. It can connect to computers or industrial monitoring platforms through RS485 Modbus, 4-20mA signals, or wireless communication.
8. How is the detector operated in hazardous areas?
The optional infrared remote controller allows parameter adjustment without opening the explosion-proof enclosure, improving operational safety.